/* ============================================
   ENGSYSTEM CURSOS - Portal do Aluno
   Mesma identidade da landing: navy + dourado
   ============================================ */

:root {
    --navy-950: #060e1a;
    --navy-900: #0a1628;
    --navy-800: #11213a;
    --navy-700: #1a2d4d;
    --gold: #c9a84c;
    --gold-light: #e2c675;
    --text: #e8edf5;
    --text-muted: #8fa0b8;
    --green: #3fbf7f;
    --red: #e5636b;
    --border: rgba(201, 168, 76, 0.18);
    --radius: 14px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: 'Inter', system-ui, sans-serif;
    background: var(--navy-950);
    background-image: radial-gradient(circle at 15% 0%, rgba(201, 168, 76, 0.08), transparent 40%);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

a { color: var(--gold-light); }
h1, h2, h3 { line-height: 1.25; margin: 0 0 8px; }

.muted { color: var(--text-muted); }
.small { font-size: 0.85rem; }
.error { color: var(--red); margin: 4px 0; font-size: 0.9rem; }
.success { color: var(--green); font-weight: 600; }

/* Topbar */
.topbar {
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 12px 24px;
    background: rgba(10, 22, 40, 0.92);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
}
.topbar__nav { display: flex; align-items: center; gap: 18px; font-size: 0.92rem; }
.topbar__nav a { color: var(--text); text-decoration: none; }
.topbar__nav a:hover { color: var(--gold); }
.topbar__nav form { margin: 0; }
.topbar__user { color: var(--text-muted); }

.brand { display: inline-flex; align-items: center; gap: 8px; text-decoration: none; color: var(--text); font-weight: 800; letter-spacing: 1px; }
.brand--center { justify-content: center; width: 100%; margin-bottom: 18px; }
.brand__icon { color: var(--gold); font-family: monospace; font-size: 1.2rem; }
.brand__badge { font-size: 0.7rem; letter-spacing: 0; padding: 2px 8px; border-radius: 99px; background: rgba(201, 168, 76, 0.15); color: var(--gold); }

.link-button { background: none; border: 0; color: var(--text); font: inherit; cursor: pointer; padding: 0; }
.link-button:hover { color: var(--gold); }

.flash {
    max-width: 1180px;
    margin: 16px auto 0;
    padding: 12px 16px;
    border-radius: 10px;
    background: rgba(63, 191, 127, 0.12);
    border: 1px solid rgba(63, 191, 127, 0.35);
}

/* Layout */
.container { max-width: 1180px; margin: 0 auto; padding: 28px 24px 60px; }
.page-title { font-size: 1.7rem; font-weight: 800; }
.section-title { font-size: 1.1rem; margin-bottom: 14px; }
.back { display: inline-flex; gap: 8px; align-items: center; color: var(--text-muted); text-decoration: none; margin-bottom: 16px; font-size: 0.9rem; }
.back:hover { color: var(--gold); }

.card {
    background: linear-gradient(180deg, var(--navy-800), var(--navy-900));
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px;
    margin-bottom: 20px;
}

.tag { display: inline-block; font-size: 0.72rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; color: var(--gold); margin-bottom: 6px; }
.tag--warn { color: #f0b44c; background: rgba(240, 180, 76, 0.12); padding: 2px 8px; border-radius: 99px; text-transform: none; }

/* Botões */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 20px;
    border-radius: 10px;
    border: 1px solid transparent;
    font: inherit;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: transform 0.15s, background 0.15s;
}
.btn:hover { transform: translateY(-1px); }
.btn--primary { background: linear-gradient(135deg, var(--gold), var(--gold-light)); color: var(--navy-900); }
.btn--outline { background: transparent; border-color: var(--border); color: var(--text); }
.btn--outline:hover { border-color: var(--gold); color: var(--gold); }
.btn--done { background: rgba(63, 191, 127, 0.15); border-color: rgba(63, 191, 127, 0.4); color: var(--green); }
.btn--disabled { background: var(--navy-700); color: var(--text-muted); cursor: default; }
.btn--full { width: 100%; }
.btn--sm { padding: 8px 14px; font-size: 0.88rem; }

/* Formulários */
.form { display: flex; flex-direction: column; gap: 14px; }
.form label { display: flex; flex-direction: column; gap: 6px; font-size: 0.9rem; }
.form label.check { flex-direction: row; align-items: center; gap: 8px; color: var(--text-muted); }
.form input[type="email"], .form input[type="password"], .form textarea {
    width: 100%;
    padding: 12px 14px;
    border-radius: 10px;
    border: 1px solid var(--navy-700);
    background: var(--navy-950);
    color: var(--text);
    font: inherit;
}
.form input:focus, .form textarea:focus { outline: none; border-color: var(--gold); }
.form .btn { align-self: flex-start; }
.form .btn--full { align-self: stretch; }

/* Login */
.login { min-height: 100vh; display: grid; place-items: center; padding: 24px 16px; }
.login__card { width: 100%; max-width: 420px; text-align: left; }
.login__card h1 { font-size: 1.4rem; text-align: center; }
.login__card > .muted { text-align: center; margin-bottom: 20px; }
.login__alt { text-align: center; margin: 18px 0 0; }

/* Meus cursos */
.course-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; margin-top: 20px; }
.course-card { padding: 0; overflow: hidden; display: flex; flex-direction: column; }
.course-card__cover {
    height: 140px;
    display: grid;
    place-items: center;
    font-size: 2.6rem;
    color: rgba(255, 255, 255, 0.9);
    background-size: cover;
    background-position: center;
}
.course-card__cover--spda { background-color: #8a6d1f; background-image: linear-gradient(135deg, #c9a84c, #6b5317); }
.course-card__cover--powerbi { background-image: linear-gradient(135deg, #7b5cd6, #3d2a7a); }
.course-card__cover--solar { background-image: linear-gradient(135deg, #f08c3a, #8a3d0f); }
.course-card__cover--areas { background-image: linear-gradient(135deg, #3d8ae5, #173c70); }
.course-card__body { padding: 18px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.course-card__body h2 { font-size: 1.05rem; flex: 1; }
.empty { text-align: center; padding: 40px 20px; }
.empty i { font-size: 2.4rem; color: var(--gold); }

.progress { height: 8px; border-radius: 99px; background: var(--navy-700); overflow: hidden; margin: 8px 0 2px; }
.progress__bar { height: 100%; background: linear-gradient(90deg, var(--gold), var(--gold-light)); border-radius: 99px; transition: width 0.4s; }

/* Página do curso */
.course-hero h1 { font-size: 1.8rem; }
.course-hero__meta { display: flex; flex-wrap: wrap; gap: 16px; margin: 10px 0; }
.course-hero .btn { margin-top: 12px; }

.lesson-list__module { margin-bottom: 18px; }
.lesson-list__module h3 { font-size: 0.95rem; color: var(--gold-light); margin-bottom: 6px; }
.lesson-list ul { list-style: none; margin: 0; padding: 0; }
.lesson-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 10px;
    border-radius: 8px;
    color: var(--text);
    text-decoration: none;
    font-size: 0.92rem;
}
.lesson-link span { flex: 1; }
.lesson-link small { color: var(--text-muted); }
.lesson-link:hover { background: rgba(201, 168, 76, 0.08); }
.lesson-link.is-current { background: rgba(201, 168, 76, 0.15); color: var(--gold-light); }
.lesson-link.is-done i { color: var(--green); }
.lesson-link.is-locked { color: var(--text-muted); cursor: default; }

/* Player da aula */
.player-layout { display: grid; grid-template-columns: 320px 1fr; min-height: calc(100vh - 57px); }
.player-layout__sidebar {
    border-right: 1px solid var(--border);
    background: var(--navy-900);
    padding: 22px 16px;
    position: sticky;
    top: 57px;
    height: calc(100vh - 57px);
    overflow-y: auto;
}
.player-layout__main { padding: 28px 32px 60px; max-width: 1000px; width: 100%; }

.content-block { margin: 22px 0; }
.content-block__title { font-size: 1.05rem; }
.video { position: relative; aspect-ratio: 16 / 9; background: #000; border-radius: var(--radius); overflow: hidden; }
.video iframe, .video video { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.pdf { height: 75vh; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); margin-bottom: 10px; background: #fff; }
.pdf iframe { width: 100%; height: 100%; border: 0; }

.file-link {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 18px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--navy-800);
    color: var(--text);
    text-decoration: none;
}
.file-link i { font-size: 1.4rem; color: var(--gold); }
.file-link span { flex: 1; font-weight: 600; }
.file-link small { color: var(--text-muted); }
.file-link:hover { border-color: var(--gold); }

.rich { color: var(--text); }
.rich img { max-width: 100%; height: auto; border-radius: 8px; }
.rich a { color: var(--gold-light); }

.lesson-actions { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin: 30px 0; flex-wrap: wrap; }
.lesson-actions form { margin: 0; }

.questions textarea { resize: vertical; }
.question { border-top: 1px solid var(--navy-700); padding: 14px 0; }
.question p { margin: 6px 0; white-space: pre-line; }
.question__reply { margin: 10px 0 0 18px; padding: 10px 14px; border-left: 3px solid var(--gold); background: rgba(201, 168, 76, 0.06); border-radius: 0 8px 8px 0; }

/* Celular */
@media (max-width: 900px) {
    .player-layout { grid-template-columns: 1fr; }
    .player-layout__sidebar { position: static; height: auto; border-right: 0; border-bottom: 1px solid var(--border); order: 2; }
    .player-layout__main { padding: 20px 16px 40px; }
}

@media (max-width: 600px) {
    .topbar { padding: 10px 16px; }
    .topbar__nav span { display: none; }
    .brand__text { font-size: 0.9rem; }
    .container { padding: 20px 16px 40px; }
    .page-title { font-size: 1.4rem; }
    .lesson-actions .btn { flex: 1; }
}